Question

which substance may lower air temperatures after a volcanic eruption? lava sulfur dioxide carbon dioxide water vapor

Explanation:

When a volcanic eruption occurs, sulfur dioxide is released into the atmosphere. It reacts to form tiny sulfate aerosols. These aerosols can reflect incoming solar radiation back into space, leading to a cooling effect on the Earth's surface and thus lowering air temperatures. Lava is hot and increases local - heat, carbon dioxide is a greenhouse gas that generally warms the atmosphere, and water vapor can also contribute to the greenhouse effect.

Answer:

sulfur dioxide